1. Advanced PWM, DSP and IGBT switching technology. 2. Galvanic isolation with built-in isolation transformers for the rectifier and the inverter, ensuring galvanic isolation between input/output and the DC bus. 3. Build-in CPU design and software/hardware cooperate control make the system extremely reliable 4. Hot-swappable power circuit design allows field-swappable maintenance and replacement. 5. Each phase with individual inverter supporting characteristics will not be violated under 100% unbalance load. 6. Protection against detaching and floating of the neutral of input power supply Ensure the safety and stability of the UPS power output. 7. Protection against improper user’s operation 8. Intelligent battery management and protection: temperature compensation, battery test, bad battery detection, improper grounding detection and etc. 9. Scalable runtime with high power internal charger (optional) 10. High temperature endurable with good heat evacuation design 11. Optional remote control panel, 3-phase software for PC monitoring, auto dialing module, battery monitor module, 3-phases SNMP card and emergency power-off switch are available. 12. Safety agency approved (UL, FCC, CE approval)